| All Patents in class 82/109 |
Patents 16 -
30
of 46
      |
| Number | Date | Patentee | Title | Type |
| 2,109,371 | Feb. 22, 1938 | W.F. Groene | Resilient work driving means | metal lathe mechanisms |
| 2,110,266 | Mar. 08, 1938 | H.J. Siekmann, W.F. Groene | Crankshaft Lathe | metal lathe chucks |
| 2,113,509 | Apr. 05, 1938 | H.J. Siekmann, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| 2,129,271 | Sep. 06, 1938 | W.R. Meyer, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| 2,131,698 | Sep. 27, 1938 | W.F. Groene, W.R. Meyer | Crankshaft chuck | crankshaft lathes |
| 2,141,466 | Dec. 27, 1938 | W.R. Meyer, W.F. Groene | Method of Machining Crankshafts | metal lathe chucks |
| 2,148,350 | Feb. 21, 1939 | W.F. Groene, W.R. Meyer | Crankshaft chuck | crankshaft lathes |
| 2,160,967 | Jun. 06, 1939 | W.F. Groene, W.R. Meyer | Crankshaft Chuck | metal lathe chucks |
| 2,184,590 | Dec. 26, 1939 | W.R. Meyer, W.F. Groene | Crankshaft Chuck | crankshaft lathes |
| 2,188,594 | Jan. 30, 1940 | W.R. Meyer, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| 2,215,922 | Sep. 24, 1940 | H.J. si, W.F. Groene | Power Chucking Mechanism | metalworking machine mechanisms |
| 2,232,226 | Feb. 18, 1941 | W.R. Meyer, H.J. Siekmann, W.F. Groene | Crankshaft Lathe | metal lathe chucks |
| 2,247,550 | Jul. 01, 1941 | W.F. Groene | Crankshaft Chuck | metal lathe chucks |
| 2,249,240 | Jul. 15, 1941 | W.F. Groene, W.R. Meyer | Power chucking device | crankshaft lathes |
| 2,250,631 | Jul. 29, 1941 | W.R. Meyer, W.F. Groene | Crankshaft Chuck | metal lathe chucks |
